docs: def create_policy(self):
          """Wrapper function. Gets the server group, sets sane defaults,
          deletes existing policies, and then runs self.prepare_policy_template
          for scaling up and scaling down policies.
          This function acts as the main driver for the scaling policy creationprocess
          """
          if not self.settings['asg']['scaling_policy']:
              self.log.info("No scaling policy found, skipping...")
              return
  
          server_group = self.get_server_group()
  
          # Find all existing and remove them
          scaling_policies = self.get_all_existing(server_group)
          for policy in scaling_policies:
              for subpolicy in policy:
                  self.delete_existing_policy(subpolicy, server_group)
  
          if self.settings['asg']['scaling_policy']['period_minutes']:
              period_sec = int(self.settings['asg']['scaling_policy']['period_minutes']) * 60
          else:
              period_sec = 1800
  
          self.prepare_policy_template('scale_up', period_sec, server_group)
          if self.settings['asg']['scaling_policy'].get('scale_down', True):
              self.prepare_policy_template('scale_down', period_sec, server_group)